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. 2011 Sep 28;6(9):e25613. doi: 10.1371/journal.pone.0025613

Figure 1. Neuropils of the grasshopper central complex.

Figure 1

A: Sagittal section through the upper (CBU) and lower (CBL) division of the central body and one nodulus (N). Left side of the drawing is anterior and top is dorsal with respect to the grasshopper's body axis. The central body includes fronto-horizontal layers, three layers (layer I–III) plus the central body anterior lip (CBAL) in the upper division and six in the lower division (layer 1–6). The layers I and II of the upper division can both be subdivided into compartments a and b (modified after [18], [21]. B: Frontal section through the protocerebral bridge (PB), the upper (CBU) and lower (CBL) division of the central body and the lateral accessory lobes (LAL). Top of the drawing is dorsal and bottom is ventral with respect to the grasshopper's body axis.